Fixes #232 - Removes AS from Users page

The password verification test has not yet been implemented but will get done in AuthSourceInternal fix
All tests now pass These tests now work whether settings[:ldap] is enabled or not
Plus whitespace fix

Fixes #170 - implement usergroups

Added migration
Added tests
Added MVC files
Added the routes as well
Added the program logic and additional views
Added RESTful actions for update and create
Added validations to ensure that usergroup.name and user.login do not collide...

fixes #173 - redirection loop on login

Squashed commit of the following:

commit c4382aeea5d72402bcbf3049d3c08f74792ca379
Author: Ohad Levy <ohadlevy@gmail.com>
Date: Thu Oct 15 22:03:26 2009 +0800

disable ldap by default

commit 685baf5f2c78128feebcbeed6910b131a072a81b
Author: Ohad Levy <ohadlevy@gmail.com>...